he also received an "f" rating from the nra. he acknowledged that gun legislation alone would not solve the problem. >> we know this is a complex issue that stirs deeply-held passions and political divides. as i said on sunday night, there's no law or set of laws that can prevent every senseless act of violence in our society. we're going to need to work on making access to mental health care at least as easy as access to a gun. we need to look more closely at a culture that all too often glorifies guns and violence. and any actions we must take must begin inside the home and inside our hearts. but the fact that this problem is complex can no longer be an excuse for doing nothing. >> later in that same press conference, president obama offered a sharp response when he was asked why his administration has mostly stayed away from the subject of gun control until now. >> this is not the first issue -- the first incident of horrific gun violence of your four years. where have you been? >> well, here's where i've been, jake. i've bee